A. Falappa, an Abstract Dialogue Framework Guillermo R. Simari Regular Helena Kein¨anen An Algorithm for Generating Nash Stable Coalition Structures in Hedonic Games 15:30-16:00 Afternoon Tea 16:00-17:30 Regular Ali Kiani, Conjunctive Queries with Constraints: Nematollaah Shiri Homomorphism, Containment and Rewriting Short Joach´ın Abbel´an, Bagging Decision Trees on Data Sets with Andr´es R. Masegosa Classification Noise 1